Product Owner · Inditex

Building AIsystems peopleactually use.

Portrait of Rubén Castro González

I build AI products that solve real-world business problems combining machine learning, product thinking, and engineering from idea to production.

LinkedIn
Based in
Galicia, Spain
Currently
Product Owner at Inditex
Education
MSc Computer Vision

01About

I build AI products that solve real business problems by connecting technology, users, and strategy.

I’m a Telecommunications Engineering graduate specialized in Telematics, currently working as a Product Owner at Inditex, where I drive the development of AI-powered products by bridging business needs and technical execution. I hold an International Master’s in Computer Vision, jointly offered by four universities in Spain and Portugal.

My journey from AI engineering to product management has given me a strong appreciation for the entire product lifecycle: understanding user needs, defining product requirements, aligning cross-functional teams, and ensuring that technology delivers measurable business value. That combination of technical depth and product thinking naturally led me towards product management, a direction reinforced by IBM’s AI Product Manager Professional Certificate.

During my Erasmus exchange in Mikkeli, Finland, I immersed myself in a new culture and lifestyle, which broadened my perspective and helped me grow both personally and professionally. I speak Spanish and Galician natively and have a high level of English (C1).

02Experience

Work Experience

My professional journey

  1. Inditex

    Aug 2026 - Present

    Product Owner

    Drive AI product initiatives from KPI analysis to solution design, proposing improvements to machine learning models and coordinating cross-functional teams. Act as the bridge between business stakeholders and engineering, ensuring technical decisions translate into measurable business impact.

    • Product Strategy
    • KPI Analysis
    • Machine Learning
    • Cross-functional Leadership
    • Stakeholder Management
  2. Gradiant

    Jan 2024 — Aug 2026

    AI Engineer

    Feb 2026 - Aug 2026

    Led technical collaboration with strategic clients across the insurance, finance, and startup sectors, defining AI roadmaps and translating business needs into engineering requirements. Designed and developed AI agent architectures and computer vision solutions for enterprise environments.

    • AI Agents
    • Computer Vision
    • Solution Architecture
    • Technical Leadership
    • Product Strategy

    Junior AI Engineer

    Jun 2024 - Jan 2026

    Developed and validated computer vision models for real-world applications. Collaborated closely with technical pre-sales teams to gather and define project requirements, while progressively taking on product management and cross-functional team coordination responsibilities in AI projects.

    • Computer Vision
    • Machine Learning
    • Technical Pre-sales
    • Product Management
    • SCRUM

    Student Intern

    Jan 2024 - Jun 2024

    Gained hands-on experience in R&D environments, contributing to computer vision projects and becoming familiar with industrial AI development workflows.

    • Computer Vision
    • R&D
    • Python
    • Machine Learning

03Studies

Academic Background

My educational journey in Computer Vision, Engineering, and related fields

  1. Universidade de Santiago de Compostela, Spain

    2024 - 2026

    International Master's in Computer Vision

    This master’s program is a collaboration between four universities: Universidade de Santiago de Compostela, Universidade do Porto, Universidade da Coruña, and Universidade de Vigo. Together, they offer an innovative approach to learning, opening up new perspectives for students.

    • Deep Learning
    • Neural Networks
    • Computer Vision
    • Research Methods
  2. Xamk - South-Eastern Finland University of Applied Sciences, Finland

    2023 - 2024

    Bachelor's in Information Technologies

    During my Erasmus exchange in Finland, I had the incredible opportunity to immerse myself in Finnish culture while expanding my academic and professional horizons. I attended business fairs, learned about entrepreneurship and startup organization, and gained valuable insights into international business practices. Beyond academics, I enjoyed unforgettable experiences such as witnessing the Northern Lights, attending ice hockey games, and exploring the unique lifestyle and traditions of Finland. This experience enriched me both personally and professionally, reinforcing my passion for innovation and global collaboration.

    • International Business
    • International Relationships
    • English
    • Finnish Culture
  3. Universidade de Vigo, Spain

    2020 - 2024

    Bachelor's in Telecommunications Engineering

    Pursuing my degree in Telecommunications Engineering at the University of Vigo has been a challenging and rewarding journey. I gained strong knowledge in telecommunications and telematics, developed problem-solving skills, and worked with innovative technologies. It was a great personal and academic challenge that helped me build resilience, grow in confidence, and strengthen my passion for engineering and continuous learning.

    • Problem Solving
    • Programming
    • Mathematics
    • Network Protocols

04Work

Selected work

A few things I've built, and what I actually did on them.

Veraquo key visual: a portrait overlaid with AI authenticity-detection markers
012026Shipped

Veraquo

AI-generated content detection platform I helped build and take to market at Gradiant.

What I did — AI Engineer - Product & Pre-Sales

I have built the detection algorithms for video deepfake detection and synthetic image detection. Alongside that, I took on growing product and pre-sales responsibilities: feeding client conversations into the roadmap, coordinating with sales and legal, and leading technical proposals such as an ICF tender on document-fraud detection.

Outcome

Being close to both the engineering and the client side meant proposals and pre-sales material — like a cybersecurity masterclass on deepfake fraud for BeValk — were grounded in what the detection actually could and couldn't do, not just a sales pitch.

  • Python
  • ONNX
  • scikit-learn
  • MLflow
  • PyTorch
  • Docker
Positamine landing page with the ring logo and subscribe form for AI-curated constructive news
022026Live

Positamine

An autonomous AI editorial agent that filters the daily doomscroll and publishes solution-focused news every morning — built solo in a weekend as a test of AI-assisted MVP development.

What I did — Solo builder — concept, architecture & engineering

Designed and built the full editorial pipeline solo: an agent that ingests global news sources, applies anti-toxicity and bias filters, and autonomously selects, writes, and formats constructive-news stories — no manual editorial input. Owned everything from the editorial-guideline design running on Llama 3.3 to the Next.js frontend and email delivery.

Outcome

Shipped as a live, fully autonomous zero-ops system that runs every morning end-to-end for about $0.03/day — a working proof-of-concept for how far AI can go in building a real product solo, from idea to production, in a single weekend.

  • Python
  • Llama 3.3
  • Groq
  • Next.js
  • Resend

05Stack

Technologies

These are the technologies and tools I work with

  • Python
  • TensorFlow
  • PyTorch
  • OpenCV
  • NumPy
  • Docker
  • Git
  • Claude Code

06Writing

Publications & Certifications

Explore my academic publications, research contributions, and professional certifications

07Interests

My Interests

I'm a Telecommunications Engineer currently working at Inditex, one of the world's largest fashion retailers, based in Galicia, Spain. I'm passionate about technology, business, entrepreneurship, and personal development.

  • Technology

    Exploring cutting-edge innovations in computer vision and AI

  • Business & Investing

    Getting started in the world of investing and entrepreneurship

  • Personal Development

    Continuous training and self-improvement

  • Inditex

    Building AI products at one of the world's largest fashion retailers

  • Nature

    Deep appreciation for forests, wildlife, ocean exploration, and outdoor activities

  • Learning

    Constantly seeking new knowledge and skills across various disciplines

08Contact

Let's build something worth shipping.

Open to conversations about computer vision, applied AI, and products that need both. The fastest way to reach me is email.